package com.ljm.boot.helloword.letCode;

public class TestFact {
    public static void main(String[] args) {
        test(0 );
    }

    public static int  test(int num ){
        if(num==3){
            return num;
        }
        num++;
        System.out.println(num);
        test(num);
        System.out.println(num);
        return 0;
    }
}
